James A. Winnefeld Jr.: The commander of North American Aerospace Defense Command discusses international and interagency challenges and opportunities for his commands. [6 p.m., Marines’ Memorial Club, 609 Sutter St., S.F.]

Neighborhood library: The program provides a virtual tour of the plans for a new North Beach public library. [12:30 p.m., SPUR, 654 Mission St., S.F.]Literary events

Susan Rosenberg: The radical political activist and social-justice advocate talks about “An American Radical.” [7 p.m., Modern Times Bookstore, 888 Valencia St., S.F.]Linda Reid: The novelist talks about “Devil Wind.” [7 p.m., “M” Is for Mystery, 86 E. Third Ave., San Mateo]

West Coast artists: Works by artists originally from, or working in, the West Coast are on view in an exhibit titled “Route 2: Undisclosed Destination.” [11 a.m. to 6 p.m., California College of the Arts, 1111 Eighth St., S.F.]

At the public library

New media: A town-hall talk focuses on the progress made toward building sustainable, quality journalism to replace coverage lost by the downsizing of print media. [6 p.m., Main Library, Koret Auditorium, 100 Larkin St., S.F.]